INDUCTANCE SENSOR

摘要

INDUCTANCE SENSOR An inductance sensor is intended for determining or controlling the gap between a sealing strip and sector plate in a rotary regenerative air preheater of the rotating-matrix type, the strip being on the matrix and being swept past the non-rotating plate. The sensor has a U-shaped core the legs of which lie in a plane generally corresponding to that containing the sealing strip when nearest to the sensor. The legs have unequal coils on them. Energization of the coils allows information to be derived concerning the gap between the strip and plate which may be recorded, displayed, or directly used to adjust that gap to a desired value by movement of the sector plate.